Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3d5da9192ab2e8a…

MALICIOUS

PDF

62.7 KB Created: 2021-03-25 13:27:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc60ecf4a20301f0063f756a075d9f23 SHA-1: 33fb087c99b19d10263d436e526b809eeab1522e SHA-256: a3d5da9192ab2e8a71730d57258f826131216ee785cedf32291f716b100e4891
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'leonvi.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to a 'Bengali food recipe book'. No scripts were extracted, but the presence of an external URI in a malicious PDF is a strong indicator of a phishing or downloader attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8468

Heuristics 3

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://leonvi.ru/award?keyword=bengali+food+recipe+book+pdf
    • https://cdn-cms.f-static.net/uploads/4388280/normal_604646209dd62.pdf
    • http://garantiya62.ru/call_me_by_your_name_book_sparknotes2xyn7.pdf
    • https://static.s123-cdn-static.com/uploads/4485309/normal_5fe2484cd9fdd.pdf
    • http://jotipire.iblogger.org/steam_workshop_er_site.pdf
    • http://lbaranaydin.com/refolominolj2qgy.pdf
    • https://cdn.sqhk.co/fejisunez/ZHGBX5w/superhero_coloring_pages_preschool.pdf
    • http://domen3.club/rutomuwavilelokesosofuri64s.pdf
    • https://cdn-cms.f-static.net/uploads/4461773/normal_6013649d4845f.pdf
    • http://tefukuk.iblogger.org/wolivuwokiwok.pdf
    • https://static.s123-cdn-static.com/uploads/4366327/normal_600800603183f.pdf
    • https://cdn.sqhk.co/vanewano/bhgfjgM/kijizil.pdf
    • http://ag-management.space/wargaming_game_center_macxxns9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://391e4f24-9fc9-4707-ac06-338edcd9f959.filesusr.com/ugd/110ef3_7bc75db0b7044e9bb393ca8c1fd755d3.pdf?index=true
    • http://gakifok.rf.gd/deluledejix.pdf
    • https://50bf384a-eeac-4f26-a262-e2ba1a5e00ba.filesusr.com/ugd/17159d_910f5a04e7bf4012a8378f5ed4088166.pdf?index=true
    • http://kunimaz.rf.gd/24030703736.pdf
    • http://jufulejilola.epizy.com/newutewajatudenajowawiden.pdf
    • https://18e7ef82-5c75-44fe-ae22-4c356c2c9ce0.filesusr.com/ugd/749e61_c08b68bb0f104dd4bac8612603fa6f37.pdf?index=true
    • https://c7972686-9310-4d97-8ac3-15e828887225.filesusr.com/ugd/8a419d_c0396c4c49cc4bb38373d025766637fe.pdf?index=true
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de7e.bin
a8f5d3334488c2db789c25f3d74e2fd19df35e2451f5f896b9ad1f715747d2d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE7E 5400 bytes

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